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re PR middle-end/86705 (pr45678-2.c ICE with msp430-elf -mlarge)

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PR middle-end/86705

	* gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
	MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
	requested variable alignment.
	(expand_one_ssa_partition): Likewise.
	(expand_one_var): Likewise.

From-SVN: r263177
This commit is contained in:
Jozef Lawrynowicz 2018-07-31 18:17:00 +00:00 committed by Jozef Lawrynowicz
parent 31f52518d4
commit b06e1dcec5
2 changed files with 14 additions and 5 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2018-07-31 Jozef Lawrynowicz <jozef.l@mittosystems.com>
PR middle-end/86705
* gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
requested variable alignment.
(expand_one_ssa_partition): Likewise.
(expand_one_var): Likewise.
2018-07-31 Richard Earnshaw <rearnsha@arm.com>
* config/pdp11/pdp11.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Redefine

10
gcc/cfgexpand.c
View File

@ -1257,10 +1257,10 @@ set_parm_rtl (tree parm, rtx x)
allocate it, which means that in-frame portion is just a
pointer. ??? We've got a pseudo for sure here, do we
actually dynamically allocate its spilling area if needed?
??? Isn't it a problem when POINTER_SIZE also exceeds
MAX_SUPPORTED_STACK_ALIGNMENT, as on cris and lm32? */
??? Isn't it a problem when Pmode alignment also exceeds
MAX_SUPPORTED_STACK_ALIGNMENT, as can happen on cris and lm32? */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
align = POINTER_SIZE;
align = GET_MODE_ALIGNMENT (Pmode);
record_alignment_for_reg_var (align);
}
@ -1381,7 +1381,7 @@ expand_one_ssa_partition (tree var)
/* If the variable alignment is very large we'll dynamicaly allocate
it, which means that in-frame portion is just a pointer. */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
align = POINTER_SIZE;
align = GET_MODE_ALIGNMENT (Pmode);
record_alignment_for_reg_var (align);
@ -1608,7 +1608,7 @@ expand_one_var (tree var, bool toplevel, bool really_expand)
/* If the variable alignment is very large we'll dynamicaly allocate
it, which means that in-frame portion is just a pointer. */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
align = POINTER_SIZE;
align = GET_MODE_ALIGNMENT (Pmode);
}
record_alignment_for_reg_var (align);